I want to drive mosfet (IRFZ44) as fast as possible using PMW. To do this, I have BD139 NPN transistor to make amplifier. A normal transistor amplifier is as follows:
Please suggest sufficient value of R1 & R2 for my application.
Do I need any additional component (diode) for PROTECTION of transistor and mosfet?
Do I need any additional component for higher speed switching?